refactor: move actions into internal

pkg/notifications/util.go

@@ -0,0 +1,24 @@
+package notifications
+
+import "bytes"
+
+// SplitSubN splits a string into a list of string with each having
+// a maximum number of characters n
+func SplitSubN(s string, n int) []string {
+	sub := ""
+	subs := []string{}
+
+	runes := bytes.Runes([]byte(s))
+	l := len(runes)
+	for i, r := range runes {
+		sub = sub + string(r)
+		if (i+1)%n == 0 {
+			subs = append(subs, sub)
+			sub = ""
+		} else if (i + 1) == l {
+			subs = append(subs, sub)
+		}
+	}
+
+	return subs
+}